Подберите к словам соответствующее определение, переведите.

1) fuel	A) the burning gas of a fire appearing as a tongue of
	light
2) flame	B) the physical matter of which a thing consists
3) fire	C) a chemical element
4) oxygen	D) the grey, white or black gas that is produced when
	something is burning
5) fire extinguisher	E) a metal container with water or chemical element
	inside for putting out small fires
6) chain reaction	F) any material that produces heat or power when it is
	burnt
7) smoke	G) a chemical chain that forms products which
	themselves cause more changes and new products
8) substance	H) able to begin burning easily
9) stage	I) a period or level in a process of development
10) combustible	j) the flames, light and heat, often smoke that are
	produced when something burns

 

Phrasal verb: do

do away with smth. – покончить с чем-то

          The government has done away with the old law.

do up – 1) застегивать (ся)

             Do up your coat, it’s cold. This dress does up at the back.

             2) прихорашивать (ся)

             Jane did herself up for the party.

do out – 1) выбежать

                 I’ll do out the living room.

do with – хотеть, нуждаться(часто используется с”can”

                    I could do with a sandwich, I’m hungry.

 

Составьте свои собственные предложения с фразовым глаголом: do

Unit VI

CLASSES OF FIRES

Lesson 1

Classification of fires.

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                      Part I

Class A and Class B fires

In firefighting, fires are identified according to one or more fire classes.

Each class designates the fuel involved in the fire, and thus the most appropriate extinguishing agent. Multiple classification systems exist in different countries. 

The United States uses the NFPA (National Fire Protection Organization) system. The NFPA defines five classifications of fire, including classes A, B, C, D and K according to the nature of the combustible materials, the size and intensity of the fire and the substances which are the most suitable for their extinction.

Europe use the European Standard "Classification of fires" (EN 2:1992, incorporatiing amendment A1:2004). Australasia use another.

Class A is the most common type of fire involving ordinary combustible materials such as wood, cloth, paper, rubber, and many plastics. This type of fire leaves an ash behind after burning and has an ember flame. The most common and the most effective extinguishing agent for them is generally water in the form of a jet or a spray. Water is used in a cooling or quenching effect to reduce the temperature of the burning material below its ignition temperature.

 

Class B fires are the ones involving liquids or liquefiable solids. A flammable liquid must be burning at room temperature in order to be a Class B fire, and a combustible liquid must be heated to its flammable point to be classified as Class B. Some flammable and combustible liquids included in this classification are petroleum, tars, oil-based paints, oil, alcohols, lacquers, solvents and flammable gases. For the purpose of choosing effective extinguishing agents, flammable liquids may be divided into two groups:

– those that are extinguished with water;

– those that are not extinguished with water.

Depending on a liquid, the extinguishing agents include water spray, foam, vaporizing liquids, carbon dioxide and dry powder. Blanketing is the most suitable method of extinguishment of this class of fires.

 

Part II